Please tell me I’m not alone 🥲

We’re 1 week into 4 months and it’s floored me. I haven’t showered all week or washed my hair! I’m hanging on mentally by a thread! My baby just will not be put down but equally doesn’t want to do anything. No activity lasts more than 2 minutes without a total meltdown. Bed time is taking 3hrs ish for her to fall asleep properly. She’s been in such a good routine since about 6 weeks and I feel like it’s all just fallen apart. I’m literally eating sandwiches all day because it’s easy. Haven’t washed my face or anything. All I’m managing to do is my teeth. The hair doesn’t even get brushed. Am I alone in this? Feel completely drained.